Tools
Free calculators and checklists for sourcing peptides.
Net peptide content calculator
Sequence → molecular weight, salt share and real peptide mass in a vial.
COA spec checker
Check a COA against your limits: mass match, purity, endotoxin, water, salt, plus authenticity.
FDA enforcement tracker
Warning letters to peptide sellers and API makers, with products named and close-out status.
COA verification checklist
Step-by-step checks for a certificate of analysis.